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Time-Resolved Studies of Fe(CO)5 at LCLS and BESSY II: Understanding Core-Excited States

This study investigates Fe(CO)5 using time-resolved techniques at the LCLS and steady-state measurements at BESSY II. We explore core-excited states and photoproducts, focusing on valence-excited states over picosecond timescales. By employing resonant inelastic soft X-ray scattering (RIXS), we enhance our understanding of electron and proton transfer reactions. Our findings aim to advance methods and instrumentation for next-generation experiments, providing insights into chemical dynamics and enabling new discoveries in the field.

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Time-Resolved Studies of Fe(CO)5 at LCLS and BESSY II: Understanding Core-Excited States

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  1. Philippe Wernet1, Kelly Gaffney2, Alexander Föhlisch11Helmholtz-Zentrum Berlin, 2PULSE at SLAC Fe(CO)5 collaboration with the LJE end station at LCLS: Ph. Wernet, K. Kunnus, M. Beye, S. Grübel, R. Hartsock, F. Hennies, I. Josefsson, B. Kennedy, D. Nordlund, S. Schreck, E. Suljoti, C. Weniger, W. Quevedo, I. Rajkovic, B. Schlotter, M. Scholz, J. Turner, W. Zhang, F. de Groot, M. Odelius, K. Gaffney, S. Techert, A. Föhlisch Time-resolved @ LCLS Steady-state @ BESSYII Fe(CO)5 3 2 1 Fe + Core-excited state 1 C O - Fe L-edge N K-edge Photoproducts Fecy Fecy 3+ 2+ Δt Valence- excited state 0 6 12 350 fs 2 * Photoproducts Energy loss (eV) Excited state 2.1 ps 3 t2g t2g 0 6 12 N C Fe 3 2 705 710 715 396 398 400 Ground state Incident photon energy (eV) 1 Zhang, Sun, Gaffney, JACS (2012). Resonant Inelastic Soft X-ray Scattering • Enabling LCLS-II methods and instrumentation • C K-edge (280 eV) and N K-edge (400 eV • RIXS on liquids at LCLS-II • Flexible access, complementary at BESSYII/SSRL • Dedicated end station at LCLS-II • Stimulated RIXS • Enhance RIXS cross section (<0.1% FY) • Beat x-ray beam damage (Auger electrons) • Selectively enhance chemical species • Few/sub-fs electron + proton transfer reactions Optical trigger X-ray hole X-ray stimulate

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